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Titolo:
Do neocortical pyramidal neurons display stochastic resonance?
Autore:
Rudolph, M; Destexhe, A;
Indirizzi:
CNRS, Unite Neurosci Integrat & Computat, F-91198 Gif Sur Yvette, France CNRS Gif Sur Yvette France F-91198 putat, F-91198 Gif Sur Yvette, France Univ Laval, Dept Physiol, Quebec City, PQ G1K 7P4, Canada Univ Laval Quebec City PQ Canada G1K 7P4 Quebec City, PQ G1K 7P4, Canada
Titolo Testata:
JOURNAL OF COMPUTATIONAL NEUROSCIENCE
fascicolo: 1, volume: 11, anno: 2001,
pagine: 19 - 42
SICI:
0929-5313(200107/08)11:1<19:DNPNDS>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
HODGKIN-HUXLEY NEURON; IN-VIVO; ACTION-POTENTIALS; CORTICAL-NEURONS; RELAY NEURONS; VISUAL-CORTEX; NOISE; DENDRITES; SYSTEMS; RAT;
Keywords:
cerebral cortex; synaptic background activity; neocortex; noise; computational models;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
76
Recensione:
Indirizzi per estratti:
Indirizzo: Rudolph, M CNRS, Unite Neurosci Integrat & Computat, Bat 33,Ave Terrasse 1, F-91198 Gif Sur Yvette, France CNRS Bat 33,Ave Terrasse 1 Gif Sur YvetteFrance F-91198 rance
Citazione:
M. Rudolph e A. Destexhe, "Do neocortical pyramidal neurons display stochastic resonance?", J COMPUT N, 11(1), 2001, pp. 19-42

Abstract

Neocortical pyramidal neurons in vivo are subject to an intense synaptic background activity that has a significant impact on various electrophysiological properties and dendritic integration. Using detailed biophysical models of a morphologically reconstructed neocortical pyramidal neuron, in which synaptic background activity was simulated according to recent measurements in cat parietal cortex in vivo, we show that the responsiveness of the cell to additional periodic subthreshold stimuli can be significantly enhanced through mechanisms similar to stochastic resonance. We compare several paradigms leading to stochastic resonance-like behavior, such as varying thestrength or the correlation in the background activity. A new type of resonance-like behavior was obtained when the correlation was varied, in which case the responsiveness is sensitive to the statistics rather than the strength of the noise. We suggest that this type of resonance may be relevant to information processing in the cerebral cortex.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 11:18:33